public class Duck extends Animal implements IFlyable,ISwimable,IRunable{
    public Duck(String name,int age){
        super(name, age);
    }

    @Override
    public void eat() {
        System.out.println(this.name + "正在吃鸭粮...");
    }

    @Override
    public void fly() {
            System.out.println(this.name + "正在飞翔...");
    }

    @Override
    public void run() {
        System.out.println(this.name + "正在奔跑...");
    }

    @Override
    public void swim() {
        System.out.println(this.name + "正在游泳...");
    }
}
